Sarcoma

Sarcoma is a rare cancer affecting any part of the body. The most common type are soft tissue sarcomas which develop in muscle, nerves, fatty tissue, and blood vessels. The other types are bone sarcoma and gastrointestinal stromal tumors.

Over 10,000 people a year in the US are diagnosed with sarcoma, making it a rare cancer that affects men and women equally.

Types of Sarcomas

Bone Sarcomas

Bone sarcomas are a diverse group of malignancies that originate from bone tissue, comprising several distinct subtypes with varying characteristics and treatment approaches. The main types of bone sarcomas include osteosarcoma, Ewing sarcoma, and chondrosarcoma.

Osteosarcoma is the most common type of primary bone cancer, typically arising in the long bones of the arms and legs. It predominantly affects children and young adults, with a peak incidence during adolescence. Osteosarcoma often presents as a painful swelling or mass near the affected bone and may be associated with pathological fractures. Diagnosis is confirmed through imaging studies, such as X-rays, CT scans, or MRI, followed by biopsy for histological examination. Treatment typically involves a combination of surgery, chemotherapy, and sometimes radiation therapy, aimed at achieving local control and preventing metastases.

Ewing sarcoma is a rare type of bone cancer that primarily affects children and young adults. It commonly arises in the pelvis, femur, or ribs, although it can occur in any bone. Ewing sarcoma is characterized by aggressive growth and a propensity for metastases to other bones or organs. Symptoms may include pain, swelling, and occasionally, fever. Diagnosis involves imaging studies and biopsy for histological analysis. Treatment usually consists of chemotherapy, surgery, and/or radiation therapy, depending on the extent of the disease and the presence of metastases.

Chondrosarcoma is a malignant tumor that arises from cartilage cells within bones. It typically occurs in older adults and commonly affects the pelvis, femur, or shoulder. Chondrosarcoma is characterized by slow growth and a tendency to recur locally, although it has a lower risk of metastases than osteosarcoma and Ewing sarcoma. Diagnosis is established through imaging studies and biopsy. Treatment involves surgical resection of the tumor, with adjuvant therapy such as chemotherapy or radiation therapy in some cases.

Soft Tissue Sarcomas

Soft tissue sarcomas are a diverse group of cancers that arise from various soft tissues in the body, including muscles, fat, nerves, blood vessels, and connective tissues. These tumors encompass a wide range of subtypes, each with unique histological, molecular, and clinical features.

Liposarcoma is the most common type of soft tissue sarcoma, arising from fat cells (adipocytes). It typically occurs in the extremities, retroperitoneum, or trunk. Liposarcoma is classified into several subtypes, including well-differentiated, dedifferentiated, myxoid, and pleomorphic variants, each with distinct characteristics and prognosis.

Leiomyosarcoma originates from smooth muscle cells and can arise in various locations, including the uterus, gastrointestinal tract, and soft tissues of the extremities. It is characterized by aggressive growth and a propensity for metastases.

Fibrosarcoma arises from fibroblasts, which are cells that produce collagen and other structural proteins in connective tissue. It commonly affects the extremities, trunk, or head and neck region. Fibrosarcoma is characterized by a high recurrence rate and potential for metastases.

Synovial sarcoma is a rare soft tissue sarcoma that typically arises near joints, especially in the extremities. Despite its name, it does not originate from synovial tissue. Synovial sarcoma is characterized by a unique chromosomal translocation and tends to affect young adults. It has a propensity for local recurrence and metastasis.